Temporary binder.



S. H. WIBERG.

TEMPORARY BINDER.

APPLICATION FILED NOV.13, 1909.

968,620. Patented Aug.30,1910.

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Witness es. 3

1w: NORRIS PETERS 5a., wnsumcrau, n. c,

UNITED STATES PATENT OFFICE.

SVEN HJ'. WIBERG, OF READING, MASSACHUSETTS, ASSIGNOR TO BONG BINDERCOM- PANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TEMPORARY BINDER.

Specification of Letters Patent.

Patented Aug. 30, 1910.

To all whom it may concern:

Be it known that I, SVEN HJ. lVIBERG, a citizen of the United States,residing at Reading, in the county of Middlesex and State ofMassachusetts, have invented new and useful Improvements in TemporaryBinders, of which the following is a specification.

This invention relates to temporary binders in which two plates arehinged together, the two members of the hinge being connected by atorsional spring in such a manner as to normally spread them apart, saidhinge plates having curved impaling pins extending from one plate acrossthe other, said impaling pins being so formed and of such length thatwhen the hinge plates are spread apart, loose sheets may be added to, orremoved from, said impaling pins, and when said hinge plates are broughttoward each other, they are locked in position, with the impaling pinsextending through the loose sheets, thus binding them together.

The invention consists in the combination and arrangement of parts setforth in the following specification and particularly pointed out in theclaims thereof, and refers particularly to the means for locking thehinge plates with the impaling pins extending through the sheets againstthe action of the spring which tends to spread these hinge plates apart.

The invention further consists in the manner in which the hinge platesare fastened to the covers of the binder and further in the particularconstruction of the hinge plates.

Referring to the drawings: Figure 1 is an inside plan view of myimproved temporary binder, the covers of the binder being broken away tosave space in the drawings. Fig. 2 is a sectional elevation taken online 2-2 of Fig. 1, showing the covers open and the hinge plates lockedagainst relative movement by the improved locking means. Fig. 3 is asectional elevation, similar to Fig. 2, showing the hinge platesunlocked and spread or folded back by the action of the torsional springwhich is connected to them, the covers being shown open in full linesand partly closed in dotted lines. The covers in both Figs. 1 and 2 arebroken away to save space. Fig. l is a plan View of a portion of one ofthe hinge plates.

Like numerals refer to like parts throu "hout the several views of thedrawings.

In the drawings, 5, 6 are two hinge plates connected together by apintle pin 7 which extends throughout the entire length of the plates 5and 6 and is encircled by a torsional spring 8, one end of which isconnected to the hinge plate 5, the other to the hinge plate 6 and isunder tension, acting to hold said hinge plates folded back orbackwardly, as illustrated in Fig. 3. The hinged plates are lockedtogether against the action of the torsional spring 8 to hold them intheir closed position or folded toward each other, as shown in Fig. 2,by an arm 9 which is rigidly fastened to the plate 6 and extends acrossthe pintle 7 and partly across the hinge plate 5 in alinement with aslot 10 therein. The arm 9 has at its outer end a notch 11, and theouter end of said arm is adapted to engage a lever 12 pivoted at 13 tothe under side of the hinge plate 5. Said lever 12 is bent upwardly atits free end at 14c to form a finger-piece and projects through a slot15 in the hinge plate 5. A spring 16 bears against the lever 12 andholds it in the position illustrated in Figs. 1 and 2 against the freeend of the arm 9, and when the parts are in the position illustrated inFig. 2, engaging said arm in the notch 11, so that the hinge plates arelocked against spreading apart or backwardly by the arm 9 and the lever12.

The plate 5 is bent at its outer edge to form a U-shaped flange 17, andthe hinge plate 6 is bent at its outer edge to form a U-shaped flange 19thereon. The flange 17 has curved impaling pins 21, 21 fast theretowhich project across said plates 5 and 6 and terminate, when the partsare in the position illustrated in Figs. 1 and 2, in the holes 22 in theflange 19. Other curved impaling pins 23, 23 are fastened to the flange19 on the hinge plate 6 and extend across the plates 5 and 6, the freeends of said impaling pins projecting into holes 24:, 24 in the flange17 when the parts are in the position illustrated in Figs. 1 and 2.

The hinge plates 5 and 6 are fastened to back plates 25 and 26,respectively and the covers 27 and 28 are pivotally connected to saidback plates and to the hinge plates by strips of fabric or otherfastening material 29, 30, which extend around said back plates and havetheir edges secured to the covers 27 and 28, the same being still morefirmly fastened thereto by a backing strip 31, preferably of leather.The back plate 25 is preferably slotted or recessed at 32 to receive thelocking lever and the outer end of the locking arm and the spring 16 andhas a thin plate 33 fast thereto to cover up said parts within saidrecess. The hinge plates 5 and 6 are fastened by screws or rivets, or inany suitable manner, to the back plates 25 and 26.

Having thus specifically described my invention, I will now proceed todescribe the general operation of the same: Assuming the parts to be inthe positions illustrated in Figs. 1 and 2 and it is desired to insertor remove a loose leaf in the binder, the lever 12 is pressed toward theright (Fig. l) by means of the finger-piece 14, overcoming the tensionof the spring 16 and releasing the outer end of the arm 9 by moving outof the notch 11. he soon as this movement of the lever 12 has takenplace, the hinge plates are folded backwardly by the action of thetorsional spring 8 from the position illustrated in Fig. 2 to thatillustrated in Fig. 3 and the impaling pins are moved also from thepositions illustrated in Fig. 2 to those illustrated in Fig. 3, thusmaking an opening between their free ends through which the loose leavesmay be inserted, and when the same have been placed upon said impalingpins or removed therefrom, as may be desired, the parts are again placedin the position illustrated in Fig. 2, by closing the covers, which,during the first portion of the closing movement, move from the positionshown in full lines in Fig. 3 to that shown in dotted lines therein,where it will be seen that the sides of the covers at their lower edgesbear against the outside of the U-shaped flanges upon the hinge plates 5and 6. Upon further movement of the covers toward each other or to aclosed position, the hinge plates will be rocked upon their pivotal pin7 against the action of the torsional spring 8, until, when the coversarrive at the position shown in dotted lines in Fig. 2, the arm 9 willmove backwardly from the position illustrated in Fig. 3 to thatillustrated in Fig. 2 and the spring actuated lever 12 will have engagedthe outer end of said arm 9 in the notch 11, thus locking the sameagainst movement relatively to the hinge plate 5.

It will be seen that the U-shaped flanges serve a three-foldpurpose,viz.,to strengthen the plates 5 and 6, respectively, to form ameans whereby the hinge plates may be moved, by means of the covers 27and 28, from the open or backwardly folded position to the closedposition, or from the position illustrated in Fig. 3 to that illustratedin Fig. 2, and third as a support and shield other of said plates, a

for the impaling pins. It will also be seen that the covers arepivotally connected to the back plates and to the hinge plates in a verystrong and durable manner by the flexible strips of fabric 29, 30 whichare firmly fastened to the covers at their edges and thence extendaround the back plates in the form of loops.

Having thus described my invention, what I claim and desire by LettersPatent to secure is:

l. A temporary binder, having in combination, two plates hingedtogether, an arm fast to one of said plates and projecting therefromthrough a slot provided in the locking lever pivoted to rock in a planeparallel to said last named plate and adapted to engage said arm beneathsaid last named plate and lock the same thereto, a spring acting to holdsaid lever in engagement with said arm, said lever projecting upwardlythrough another slot in said last-named plate, whereby said lever may berocked to disengage said arm.

2. A temporary binder, having in combination, two plates hingedtogether, two back plates to which said hinge plates are respectivelyfastened, two covers, and a flexible strip of fabric extending aroundeach of said back plates respectively and fastened to each of saidcovers, respectively.

3. A temporary binder, having in combination, two plates hingedtogether, two back plates to which said hinge plates are respectivelyfastened, two covers, a flexible strip of fabric extending around eachof said back plates respectively, and a backing strip connecting saidcovers together and fastening said flexible strips to said covers.

1. A temporary binder, having in combination, two plates hingedtogether, two back plates to which said hinge plates are respectivelyfastened, a U-shaped flange on the outer edge of each of said hingedplates, two covers pivotally connected to said back plates and adaptedto bear against said U- shaped flanges, a spring acting to spread saidhinge plates apart, and means to lock said hinge plates together.

5. Atemporary binder, having in combination, two plates hinged together,two back plates to hich said hinge plates are respectively fastened, aU-shaped flange on the outer edge of each of said hinged plates, twocovers pivotally connected to said back plates and adapted to bearagainst said U- shaped flanges, a spring acting to spread said hingesapart, an arm fast to one of said plates and projecting therefromthrough a slot provided in the other of said plates, a locking leverpivoted to rock in a plane parallel to said last-named plate and adaptedto engage said arm beneath said lastnamed plate and lock the samethereto, a spring acting to hold said lever in engagement with said arm,said lever projecting upwardly through another slot in said lastnamedplate, whereby said locking lever may be rocked to disengage said arm..

6. A temporary binder having, in combination, two back plates hingedtogether, two metal plates rigidly fastened to said back plates, aU-shaped flange on the outer edge of each of said metal plates, and acurved arm fast to each of said flanges and extending across said metalplates in opposite directions, respectively.

7. A temporary binder having, in combination, two plates hingedtogether, two back plates to which said hinge plates are respectivelyfastened, a U-shaped flange on the outer edge of each of said hingeplates, and two cover plates pivotally connected to said back plates andadapted to bear against said U-shaped flanges.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

SVEN HJ. WIBERG.

Witnesses:

CHARLES S. GOODING, LOUIS A. JoNEs.

